W90221X Winbond Electronics Corp America, W90221X Datasheet - Page 186

• Manufacturer Part Number: W90221X
• Description: Pa-risc Embedded Controller
• Manufacturer: Winbond Electronics Corp America

8
The W90221XX is packaged in a 208-pin PQFP package. The
following figure shows its mechanical dimension
Figure 8.1 Package outline
W90221X version 0.6
t rp
t ras
t rc
t cl
t casw
t casr
t cp
52
1
PACKAGE DIMENSIONS
Seating Plane
208
53
e
See Detail F
RAS# precharge time
RAS# active time
RAS# cycle time
CAS# latency time
CAS# pulse width for write
CAS# pulse width for read
CAS# precharge time
H
D
D
b
y
157
104
156
105
A
A
A
E H
1
2
E
L
c
L
1
Detail F
1
1
2
1
1
1
1
Note:
Symbol
1.Dimension D & E do not include interlead
2.Dimension b does not include dambar
3.Controlling dimension : Millimeter
4.General appearance spec. should be based
flash.
protrusion/intrusion
on final visual inspection spec.
A
A
A
b
c
D
e
H
H
L
L
y
0
E
1
2
D
E
1
Dimension in inch
1.193
1.193
0.012
0.004
0.122
0.006
0.004
1.097
1.097
0.016
0.043
Min
0
0.008
0.006
1.102
1.102
Nom
0.127
0.020
1.205
1.205
0.020
0.051
8
8
9
3
4
8
2
0.145
0.132
0.010
0.010
1.107
1.107
0.024
1.217
1.217
0.028
0.059
0.004
.
Max
10
Dimension in mm
27.87
27.87
0.40
30.30
30.30
0.10
3.10
0.15
0.10
Min
0.30
1.10
0
- 186 -
Nom
28.00
28.00
30.60
30.60
3.23
0.20
0.15
0.50
0.50
1.30
MCLK
MCLK
MCLK
MCLK
MCLK
MCLK
MCLK
28.13
28.13
30.90
30.90
Max
0.60
0.70
3.68
3.35
0.25
0.25
1.50
0.10
10